Related Manuals for East Tester ET2725A
Summary of Contents for East Tester ET2725A
- Page 1 ET2725A Multifunction Process Calibrator ET2725B Multifunction Process Calibrator Users Manual Hangzhou Zhongchuang Electron Co., Ltd.
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Page 2: Table Of Contents
Contents 1 Basic Introduction................. 1 1.1 Function....................... 1 1.2 Summary of Source and Measure Functions............1 1.3 Terminal Description....................2 1.4 Keys description....................3 2 Basic Operation..................5 2.1 Measure and Source..................... 5 2.2 Shut Down Mode....................7 2.3 Backlight brightness Adjustment................. 7 3 Functions of Upper Display.............. - Page 3 7 Advanced Application.................24 7.1 Setting 0 % and 100 % Output Parameters............24 7.2 Auto Ramping the Output.................. 25 7.3 Factory Reset......................25 7.4 Calibrating a Transmitter................... 25 8 Power....................27 8.1 Charge........................ 27 9 Specifications..................28 9.1 DC Voltage Measurement................28 9.2 DC Voltage Source..................
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Page 4: Basic Introduction
1 Basic Introduction 1.1 Function A split-screen display. The upper display allows you to measure volts, current (with loop power), resistance and continuity test. The lower display allows you to measure and source volts, current, resistance temperature detectors (RTD), thermocouples (TC), frequency, and ohms. -
Page 5: Terminal Description
1.3 Terminal Description Figure 1.3-1 Name Description Communication and Connect the power adaptor to charge batteries or connect ① Charging connector the calibrator to the computer. Measure V, mV, mA, Loop, Input terminals for measuring voltage, current, resistance, Ω and continuity test and supplying loop power.The two terminals electrical ②... -
Page 6: Keys Description
1.4 Keys description Figure 1-3 Description Turns the power on or off Selects DC V or DC mV measurement function in the upper display Selects DC mA or Loop Power measurement function in the upper display Selects resistance measurement or continuity test function in the upper display Turns backlight on or off. - Page 7 Set output by 0% of span. Press and hold to store the source value as the 0 % value. Decrements output by 25 % of span. Increments output by 25 % of span. Sets output by 100% of span. Press and hold to store the source value as the 100 % value.
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Page 8: Basic Operation
2 Basic Operation 2.1 Measure and Source This section acquaints you with some basic operations of ETX-2025/ ETX-1825. Proceed as follows to perform a voltage-to-voltage test: Connect the calibrator’s the voltage output to its voltage input as shown in Figure 2.1-1. - Page 9 Then the type of product and automatic shutdown time will be displayed for 2 seconds as shown in Figure 2.1-3. Figure 2.1-3 Then the default interface of boot will be displayed as shown in Figure 2.1-4: Figure 2.1-4 Attention: The upper and lower default modes are both based on DC voltage during turn on. Press for SOURCE mode (lower screen).
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Page 10: Shut Down Mode
The screen will display as shown in Figure 2.1-6 Figure 2.1-6 2.2 Shut Down Mode The calibrator comes with the Shut Down mode enabled for a time duration set to 30 minutes (displayed for about 2 seconds when the calibrator is initially turned on). When the Shut Down mode is enabled, the calibrator will automatically shut down after the time duration has elapsed from the time the last key was pressed. - Page 11 Figure 2.3-1 Press to adjust the brightness of backlight. Press to save brightness level, will appear and then the calibrator will enter into the work mode (Without pressing any key for 5 seconds, the calibrator will exit automatically).
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Page 12: Functions Of Upper Display
3 Functions of Upper Display 3.1 DC V and DC mV Measurement The default function of the upper screen is DC V measurement after turn on. Press to select DC V or DC mV and the connection is shown in Figure 3.1-1. Figure 3.1-1 3.2 DC mA Measurement Press... -
Page 13: Resistance Measure And Continuity Test
Figure 3.3-1 3.4 Resistance measure and continuity test Press to select resistance measurement or continuity test function circularly with the unit of Ω and the connection is the same as DC V measurement. In the continuity test function, the buzzer works when the measured value less than 50Ω. -
Page 14: Functions Of Lower Display
4 Functions of Lower Display The state of the upper display remains unchanged during the operation of the lower display. 4.1 Measure and Source of DC V and DC The lower display default function is DC V measurement after trun on. If necessary, press to select DC V or DC mV function and press to switch... -
Page 15: Dc Ma Source（Active
Figure 4.2-1 4.3 DC mA Source（active） Press to select mode. If necessary, press to select DC mA source with the unit of and then the calibrator can implement current output. The connection is shown in Figure 4.3-1. Figure 4.3-1 When the output load is too heavy, sign will appear in the display as shown in Figure 4.3-2. -
Page 16: Simulating A 4- To 20-Ma Transmitter
check connection and load accordingly. Figure 4.3-2 4.4 Simulating a 4- to 20-mA Transmitter Simulate is a special mode of operation in which the calibrator is connected into a loop in place of a transmitter and supplies a known, settable test current. Proceed as follows: Connect the 24 V loop power source as shown in Figure 4.4-1. -
Page 17: Measure And Source Of Resistane
4.5 Measure and Source of Resistane Measure Press to select mode. If necessary, press to select resistance function with the unit of . The interface is shown in Figure 4.5-1: Figure 4.5-1 Attention: Over range indicate when the connection open Resistance measurement supports the connection types of two-wire, three-wire and four-wire. -
Page 18: Measure And Source Of Frequency
not detect the connecting type automatically unless you quit the mode of resistance measurement and reenter. Source Press to select mode. If necessary, press to select resistance function with the unit of . The connecting type is the same as DC V measurement. Press to switch resistance output range.(Resistance source includes 400 range and 3200... - Page 19 Source Press to select mode. If necessary, press to select frequency, its unit is . The connection is same to DC V measurement. Press to select source range. The screen will display as shown in Figure 4.6-2. Figure 4.6-2 Attention: The left is of 200.00Hz range and the right is of 20.000kHz range.
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Page 20: Temperature Measurement
5 Temperature Measurement 5.1 Using Thermocouples (TC) The calibrator supports ten standard thermocouples, including type E, N, J, K, T, B, R, S, L, or U. Lower table summarizes the ranges and characteristics of the supported thermocouples. Type Positive Lead Material Negative Lead Material Specified Range（℃）... - Page 21 Figure 5.1-1 Attention : If the calibrator and the thermocouple plug are at different temperatures, wait one minute or more for the connector temperature to stabilize after you plug the miniplug into the TC input/output. Press to select mode. Press for the TC display.
- Page 22 measurement, automatic compensation directly using machine internal cold end temperature compensation and manual compensation through the key to set the cold end temperature compensation by the user. 5.1.1 Automatic compensation First entered the thermocouple measurement mode, the default of the cold end temperature compensation is automatic compensation reading as shown in Figure 5.1.1-1.The sign represents that the current cold end temperature...
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Page 23: Using Resistance Thermometer Detector (Rtd)
Figure 5.1.2-1 If you need to adjust the manual compensation value, press keys to adjust. Press key to save the value of manual compensation and exit from the setup mode at the same time, reading as shown in Figure 5.1.2-2. Figure 5.1.2-2 If necessary, press key return to automatic compensation. - Page 24 Press to select mode. Press for the RTD display. If desired, continue pressing this key to select the desired RTD type. The calibrator can detect the connecting type automatically,and you can Press to select a 2-, 3-, or 4- wire manually.
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Page 25: Simulation Of Temperature Sensor
Simulation temperature sensor 6.1 Simulating Thermocouples Connect calibrator input/output terminal to the instrument to be tested using the thermocouple. The connecting diagram is shown in Figure 6.1-1. Proceed as follows to simulate a thermocouple: Connect the thermocouple to the TC input/output plughole of the calibrator. If necessary, press to select mode. -
Page 26: Simulating Rtd
6.2 Simulating RTD Connect the calibrator and the instrument to be tested according to the Figure 6.2-1. Proceed as follows to simulate RTD: Figure 6.2-1 Attention: Third-wire (3 W) and Fourth-wire (4 W) terminals are just for measurement, not simulation. The calibrator can simulate a two-wire RTD source in the front panel. -
Page 27: Advanced Application
7 Advanced Application 7.1 Setting 0 % and 100 % Output Parameters As for stepping operation and percentage display, 0% and 100% should be set before using. The default values have been set when delivered from the factory and set values are listed below: Source function 0% value... -
Page 28: Auto Ramping The Output
7.2 Auto Ramping the Output Auto ramping gives you the ability to continuously apply a varying stimulus from the calibrator to a transmitter, while your hands remain free to test the response of the transmitter. When you press , the calibrator produces a continuously repeating 0 % - 100 % - 0 % ramp in your choice of three ramp waveforms : 0%-100%-0% 40-second smooth ramp... - Page 29 desired thermocouple type. If necessary, press to select source mode. Set your zero and span parameters by pressing keys. Enter these parameters by pressing and holding . For more information on setting parameters, see “Setting 0 % and 100 %” earlier in this manual Perform test checks at 0-25-50-75-100 % points by pressing Adjust the transmitter as necessary.
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Page 30: Power
8 Power The calibrator needs 6 disposable LR03 model (size 7) alkaline batteries or 6 R03 model (size 7) nickel-metal hydride batteries (or nickel-cadmium batteries). The longest service life of alkaline batteries can reach 50 hours. A 12V/1A power adaptor is used for charging and providing working power for the calibrator. -
Page 31: Specifications
9 Specifications Specifications are based on a one year calibration cycle and apply from +18 C to C unless stated otherwise. All specifications assume a 10 minute warmup period. 9.1 DC Voltage Measurement Accuracy ( % of reading + counts) Maximum Range Resolution... -
Page 32: Dc Ma Measurement
9.3 DC mA measurement Accuracy ( % of reading + counts) Maximum Range measurement Resolution ETX-1825 ETX-2025 range 20mA -24mA～24mA 0.001mA 0.05+2 0.025+2 (upper display) 20mA 0～24mA 0.001mA 0.05+2 0.025+2 (loop of upper display) 20mA 0～24mA 0.001mA 0.05+2 0.02+2 (lower display) -10 ℃～... -
Page 33: Resistance Measurement (Lower Display)
On-off test 0～200Ω 1Ω 0.05+1 -10 ℃～ 18 ℃， +28 ℃～ 55 ℃ temperature coefficient,±0.005%FS/ ℃ . Maximum load voltage: 20V, equivalent to voltage of 20mA on 1000Ω load resistance. 9.6 Resistance measurement (lower display) Accuracy（Ω） ETX-1825 ETX-2025 Maximum Range measurement Resolution Two-wire... -
Page 34: Frequency Measurement
9.8 Frequency measurement Accuracy ( % of reading + Maximum counts) Range measurement Resolution range ETX-1825 ETX-2025 100Hz 1~99.999Hz 0.001Hz 1000Hz 100~999.99Hz 0.01Hz 0.02+1 0.01+1 10kHz 1k~9.9999kHz 0.1Hz 100kHz 10k~99.999kHz Sensitivity: 10Hz ～ 10kHz ， Vp-p≥1V; rest:Vp-p≥2V. Wave form: Square wave. 5 counting points should be added to errors of other wave forms. Commercial frequency can be measured directly. -
Page 35: Temperature, Rtd
-200℃～0℃ 1.8℃ 1.2℃ 0.1℃ 0℃～400℃ 1.2℃ 0.8℃ -200℃～0℃ 1.5℃ 0.9℃ 0.1℃ 0℃～950℃ 1.0℃ 0.7℃ -20℃～0℃ 4℃ 2.5℃ 0℃～500℃ 0.1℃ 2.5℃ 1.8℃ 500℃～1750℃ 2℃ 1.4℃ -20℃～0℃ 4℃ 2.5℃ 0℃～500℃ 0.1℃ 2.5℃ 1.8℃ 500℃～1750℃ 2℃ 1.5℃ 600℃～800℃ 3.5℃ 2.2℃ 800℃～1000℃ 0.1℃ 2.5℃ 1.8℃... -
Page 36: Product Accessories
10 Product Accessories 10.1 Standard Accessories ETX-2025/ETX-1825 multifunction process calibrator also includes the following: hard spot test leads (two sets) alligator clips (two sets) One 12V/1A power adaptor ETX-2025/ETX-1825 Users Manual Alligator clip Hard spot test leads Figure 10.1-1 10.2 Optional Accessories 6 R03-model rechargeable batteries... -
Page 37: Warning
11 Warning To avoid possible electric shock or personal injury: Test a given voltage to confirm its normal operation before using. Mutual authentication of the upper and lower display data, for instance. Please follow all the safety operation procedures. ... - Page 38 Hangzhou Zhongchuang Electron Co.,Ltd. Phone: 0086-571-56770221 Fax: 0086-571-56861355 Website: Http://www.east-tester.com E-mail: sales@east-tester.com Zip Code: 310015 Address: No.3, Kangle Road, Gongshu District, Hangzhou,Zhejiang,China...